#21
The White Rhinoceros has long been the target of African poachers seeking its horn, which is said to cure illnesses and as of today it is one of only 5 rhinoceros species still in existence.
White Rhinos
https://www.worldwildlife.org/species/white-rhino
'West African black rhinos (Diceros bicornis longipes) were declared extinct in 2011, with the last one having been sighted in 2006. Their initial population losses were due to habitat loss and big game hunters that killed them for sport."